diff --git a/libs/security-1.0.0.jar b/libs/security-1.0.0.jar
new file mode 100644
index 0000000..2e46994
Binary files /dev/null and b/libs/security-1.0.0.jar differ
diff --git a/src/main/java/com/eactive/eai/transformer/function/crypto/SeedKJDecrypt.java b/src/main/java/com/eactive/eai/transformer/function/crypto/SeedKJDecrypt.java
index 3243243..f22dbc1 100644
--- a/src/main/java/com/eactive/eai/transformer/function/crypto/SeedKJDecrypt.java
+++ b/src/main/java/com/eactive/eai/transformer/function/crypto/SeedKJDecrypt.java
@@ -4,29 +4,25 @@ import java.util.Stack;
 
 import org.nfunk.jep.ParseException;
 import org.nfunk.jep.function.PostfixMathCommand;
-
-import com.eactive.eai.common.property.PropManager;
-
 import java.nio.charset.StandardCharsets;
 
 import org.apache.commons.lang3.StringUtils;
 // kj bank import 2025-09-23 jwhong
-//import org.kjbank.simple.core.crypto.seed.SeedUtil;
-import com.eactive.eai.common.seed.SeedKJ;
-
+//import com.eactive.eai.common.seed.SeedKJ;
+//security-1.0.0.jar 사용으로 변경 2026-01-05
+import com.eactive.eai.security.seed.Seed;
+import com.eactive.eai.common.context.ElinkTransactionContext;
 
 public class SeedKJDecrypt extends PostfixMathCommand {
     public SeedKJDecrypt() {
-        numberOfParameters = 2;
+        numberOfParameters = 1;
     }
 
     public void run(Stack inStack) throws ParseException {
         checkStack(inStack);
-             
-        // USER FUNCTION에서 Parameter 에서 가져옴 
-        Object param2 = inStack.pop();
-        String param2Str = String.valueOf(param2); // null 안전 처리      
-        String decryptKey = StringUtils.leftPad(param2Str, 16, '0');     
+        
+        String seedKey = ElinkTransactionContext.getSeedKey();
+        String decryptKey = StringUtils.leftPad(seedKey, 16, '0');     
 
         Object param = inStack.pop();
 
@@ -52,8 +48,8 @@ public class SeedKJDecrypt extends PostfixMathCommand {
         }
 
         try {
-        	String decryptedData = SeedKJ.decrypt(new String(value, StandardCharsets.UTF_8), decryptKey);
-        	
+        	String decryptedData = Seed.decrypt(decryptKey, new String(value, StandardCharsets.UTF_8));
+        			
         	inStack.push(decryptedData);
         } catch (Exception e) {
             //throw new ExecutionException(e.getMessage(), parameters, e);
diff --git a/src/main/java/com/eactive/eai/transformer/function/crypto/SeedKJEncrypt.java b/src/main/java/com/eactive/eai/transformer/function/crypto/SeedKJEncrypt.java
index f2141e0..9af4702 100644
--- a/src/main/java/com/eactive/eai/transformer/function/crypto/SeedKJEncrypt.java
+++ b/src/main/java/com/eactive/eai/transformer/function/crypto/SeedKJEncrypt.java
@@ -5,29 +5,27 @@ import java.util.Stack;
 import org.nfunk.jep.ParseException;
 import org.nfunk.jep.function.PostfixMathCommand;
 
-import com.eactive.eai.common.property.PropManager;
-
 import java.nio.charset.StandardCharsets;
 
-// kj bank import 2025-09-23 jwhong
-import com.eactive.eai.common.seed.SeedKJ;
-import com.eactive.eai.common.seed.SeedCipher;
+// security-1.0.0.jar 사용으로 변경 2026-01-05
+import com.eactive.eai.security.seed.Seed;
+//kj bank import 2025-09-23 jwhong
+//import com.eactive.eai.common.seed.SeedKJ;
+
 import org.apache.commons.lang3.StringUtils;
 import java.util.Base64;
-//import org.kjbank.simple.core.crypto.seed.SeedUtil; 
+import com.eactive.eai.common.context.ElinkTransactionContext;
 
 public class SeedKJEncrypt extends PostfixMathCommand {
     public SeedKJEncrypt() {
-        numberOfParameters = 2;
+        numberOfParameters = 1;
     }
 
     public void run(Stack inStack) throws ParseException {
         checkStack(inStack);
            
-        // USER FUNCTION에서 Parameter 에서 가져옴
-        Object param2 = inStack.pop();
-        String param2Str = String.valueOf(param2); // null 안전 처리      
-        String encryptKey = StringUtils.leftPad(param2Str, 16, '0');
+        String seedKey = ElinkTransactionContext.getSeedKey();
+        String encryptKey = StringUtils.leftPad(seedKey, 16, '0');
 
         Object param = inStack.pop();
 
@@ -53,7 +51,7 @@ public class SeedKJEncrypt extends PostfixMathCommand {
         }
 
         try {
-        	String encryptedData = SeedKJ.encrypt(new String(value, StandardCharsets.UTF_8), encryptKey);   
+        	String encryptedData = Seed.encrypt(encryptKey, new String(value, StandardCharsets.UTF_8));
         	
         	inStack.push(encryptedData);
         } catch (Exception e) {